Heap buffer overflow in Skia in Google Chrome prior to 87.0.4280.141 allowed a remote attacker to potentially exploit heap corruption via a…

published 2021-01-08 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-8504

cvss: 8.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.5%; EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits: 0; none known

Heap buffer overflow in Skia in Google Chrome prior to 87.0.4280.141 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Patch / fix

fixed in 1 distros 4

Google Chrome 87.0.4280.141

debian ubuntu opensuse arch linux

chromium Debian 14, Debian 13, Debian 12 87.0.4280.141-0.1

debian advisories DEBIAN-CVE-2021-21113

chromium-browser Ubuntu 16.04 LTS 89.0.4389.82-0ubuntu0.16.04.1
chromium-browser Ubuntu 18.04 LTS 89.0.4389.82-0ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2021-21113

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

chromium openSUSE Tumbleweed 93.0.4577.82-1.1
chromium openSUSE Tumbleweed 113.0.5672.92-1.1
opera openSUSE Leap 15.2 NonFree 73.0.3856.344-lp152.2.30.1
opera openSUSE Leap 15.1 NonFree 73.0.3856.344-lp151.2.42.1
chromium Package Hub 15 SP2 87.0.4280.141-bp152.2.47.1
chromium Package Hub 15 SP1 87.0.4280.141-bp151.3.150.1
chromium openSUSE Leap 15.1 87.0.4280.141-lp151.2.165.1
chromium openSUSE Leap 15.2 87.0.4280.141-lp152.2.60.1

opensuse advisories openSUSE-SU-2024:10681-1 openSUSE-SU-2024:12948-1 openSUSE-SU-2021:0139-1 openSUSE-SU-2021:0138-1 openSUSE-SU-2021:0048-1 openSUSE-SU-2021:0047-1

chromium Arch Linux 87.0.4280.141-1
vivaldi Arch Linux 3.5.2115.87-1

arch linux advisories AVG-1414 AVG-1424

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-21113 updated 2025-11-21 cvss 8.8

chromium-browser: Heap buffer overflow in Skia

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.49% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	6.8	AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

Google Chrome

Classification

Weakness

CWE-787 Out-of-bounds Write

Technology feeds

Google Chrome rss critical rss

References

security.gentoo.org /glsa/202101-05
vendor-advisory, third-party-advisory
debian.org /security/2021/dsa-4832
vendor-advisory, third-party-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/VVUWIJKZTZTG6G475OR6PP4WPQBVM6PS/
vendor-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/Z6P6AVVFP7B2M4H7TJQBASRZIBLOTUFN/
vendor-advisory
chromereleases.googleblog.com /2021/01/stable-channel-update-for-desktop.html
release-notes, vendor-advisory
crbug.com /1155178
permissions-required, vendor-advisory

Sources

CVE List CVE-2021-21113
NVD CVE-2021-21113

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary